• Title/Summary/Keyword: first order line

Search Result 783, Processing Time 0.028 seconds

A Study for Failure Examples Including with Engine Oil Leakage, Poor Contact by Fin Damage and Vaporizer Inferiority on LPG Automotive (LPG 자동차의 엔진오일누설, 핀 손상에 의한 접촉불량, 베이퍼라이저 내부불량으로 인한 고장사례연구)

  • IL Kwon, Lee;Chang Ho, Kook;Sung Hoon, Ham;Seung Yong, Lee;Jae Gang, Lee;Seung Min, Han; Woo Chan, Hwang;Dae Cheon, Jang;Chang Bae, You;Jeong Ho, Lee
    • Journal of the Korean Institute of Gas
    • /
    • v.26 no.6
    • /
    • pp.24-29
    • /
    • 2022
  • This paper is a purpose to Analyze and study the failure examples for a engine oil leakage of camshaft bearing seal, poor contact by computer connector fin damage and vaporizer inferiority on LPG automotive. The first example, when the researcher disassembled the cylinder head of engine to establish the cause for oil leakage, he confirmed the engine oil leakage by damaged between the engine intake camshaft bearing and seal part. The second example, the connector fin of power source line that control the starting of a car supplied with engine computer. As a result, it found the fact that the engine operation stopped because of cutting of the power source by connector fin damage. The third example, it verified the engine incongruity phe cutting of the power source by connector fin damage. The third example, it verified the engine incongruity phenomenon as thd gas didn't flow the vaporizer by foreign substance deposit. Finally, it supplied a small quantity gas from vaporizer to mix. As the computer controlling mix opening condition supplied a air as opening signal, the air and fuel became rarefied state. it knew that the engine didn't produce prpper power. Therefore, a car have to throughtly inspect not in order to arise the failure symptoms.

The Effects of Public Service Motivation on the Innovative Behavior of Public Officials : With a focus on the mediating effects of ethical leadership and the moderating effects of organizational culture (공무원의 공공봉사동기가 혁신행동에 미치는 영향: 윤리적 리더십의 매개효과와 조직문화의 조절효과를 중심으로)

  • Seo, Gwi-Bun;Choi, Do-Lim
    • The Journal of the Korea Contents Association
    • /
    • v.22 no.9
    • /
    • pp.531-543
    • /
    • 2022
  • This study aims to examine the mediating effects of ethical leadership and the moderating effects of organizational culture in relation to the impact of public service motivation on innovative behavior by public officials. This research utilizes data from the 2021 Public Employee Perception Survey conducted to public officials by the Korea Institute of Public Administration. Public service motivation had a positive effect on innovative behavior and ethical leadership, while ethical leadership had a positive effect on innovative behavior. In addition, ethical leadership mediated the relationship between public service motivation and innovative behavior. Under organizational culture, hierarchical and innovative cultures exhibited moderating effects. The policy and practical implications of these findings are as follows. First, it is important to build ethical leadership in order to retain the national competitiveness of public officials and encourage innovative behaviors that can adapt to changes at public organizations. Second, the competition rate for public service examinations has fallen recently. This may be interpreted as an unfavorable perception of public service bureaucracy among the MZ generation. Consequently, in line with the changing times, the organizations of public officials must adopt to a future-oriented, innovative culture. Third, it is necessary to explore alternative methods for developing an innovative culture, such as giving greater flexibility and autonomy through transfer of authority to public officials who address the public directly.

Development and Validation of Psychological Difficulties Scale of Working Moms (워킹맘 심리적 어려움 척도 개발 및 타당화: 대졸이상 고학력 워킹맘 중심으로)

  • Jung, Hyun;Tak, Jinkook
    • The Korean Journal of Coaching Psychology
    • /
    • v.4 no.2
    • /
    • pp.1-26
    • /
    • 2020
  • The purpose of this study was to develop and validate the Psychological Difficulties Scale of Working Moms(PDSWM). In the first study, 69items and 17 factors of the inventory were obtained based on interview, open-ended questionnaires. In the second study, the on-line surveys from 306 working mom was carried to analyze factor structure of the PDSWM. The final result showed that the 12 factor model with 64 items was appropriate. The third study was collected from 638 working mom and in order to make certain the cross-validity of the inventory, the group was divided into two groups (each group with 319 employees). The results of exploratory factor analyses using data of group 1 showed that the 8 factor structure with 48 items was appropriate. Also the results of confirmatory factor analysis using data of group 2 showed that the 8 factor structure indicated a satisfactory fit. Final 8 factors were as follows: 1) Feeling Apologetic to family members 2) Discrimination at workplace 3) burnt-out: both body and mind 4) Unequal distribution of child-rearing and house chore labor 5) Conflict with the babysitter/grandparents 6) Limit in further strengthening work competency 7) Social prejudice 8) Difficulty being on time for work. The PDSWM was significantly correlated with various criteria such as organizational commitment, life satisfaction, and work engagement. Based on such findings, implications, limitations, and the suggestions for future study were discussed.

  • PDF

Digital technique in diagnosis and restoration of maxillary anterior implant: a case report (디지털 기법을 활용한 상악 전치부의 진단 및 수복 증례)

  • Haemin, Bang;Woohyung, Jang;Chan, Park;Kwi-Dug, Yun;Hyun-Pil, Lim;Sangwon, Park
    • Journal of Dental Rehabilitation and Applied Science
    • /
    • v.38 no.4
    • /
    • pp.249-256
    • /
    • 2022
  • The implant prosthesis of anterior maxilla requires careful consideration in planning. In order to satisfy both esthetic and functional needs of a patient, fusion of intra-oral scan in Cone-beam computed tomography (CBCT) and facial scan can be considered. Bony structures and soft tissues captured in CBCT and occlusal surfaces of intra oral scan were incorporated into personal characteristics from facial scan. The patient had insufficient buccal bone on maxillary anterior area. The maxillary implants could not be placed on the most ideal position. However, the "top down" approach completed by computer-generated arranging of teeth in implant planning and surgery with surgical guide resulted in esthetically and functionally satisfying result regardless of the limitation. Careful diagnosis with digital technique and the usage of surgical guide resulted in successful surgery and esthetic restoration. The temporary fixed prostheses were designed, restored and evaluated. The patient was not satisfied with the first design of temporary prosthesis, which showed uneven space distribution between teeth due to the position of maxillary implant. The design was modified by changing proximal emergence contours and line angle to alter the perceived since of incisors. The patient was satisfied with the new design of provisional restoration. A digital occlusion analyzer (Arcus Digma II, KaVo, Leutkirch, Germany) was used to measure inherent condylar guidance and anterior guidance of a patient to provide a definitive prosthesis.

A Study on the Derivation of Plans for Operational Improvement Based on the Analysis of the Current Status and Cases of the National Policy Research Portal (NKIS) (국가정책연구포털(NKIS) 현황 및 사례 분석을 통한 운영 개선 방안 도출에 관한 연구)

  • Noh, Younghee;Chang, Inho;Kang, Ji Hei;Kwak, Woojung
    • Journal of Korean Library and Information Science Society
    • /
    • v.53 no.1
    • /
    • pp.55-79
    • /
    • 2022
  • In this study, the current status of operation was analyzed with a view to analyze the areas in need of improvement and the status of portals of similar institutions. Based on which, a proposal was made to help improve the function of utilization as well as search the products of studies by and for the research institutes funded by the government having jurisdiction by applying the information service technology developing in line with the fourth industrial revolution for the purposes of aiding and fostering with efficiency toward achieving the goal of establishment for such institutes, while strengthening the utility of NKIS. First, in order to secure the membership, it is necessary to find the targets for policy information and promotion, and it is also necessary to increase the demand for policy information, such as by preparing the people friendly policy reports, infographics, and information delivery in an easy manner. Second, it is necessary to provide customized services in the manner which reinforces reports and policy data on the social issues and education topics, which are among the interests of the primary user base by considering the ratio of visiting occupations. Third, for the diversification and expansion of video data services, it is necessary to prepare alternatives, such as by setting regulations and encouraging the institutions of jurisdiction to upload the video data. Fourth, it will be necessary to improve the overall public relations service. It is also necessary to proceed with the NKIS' publicity webtoon serialization with the latest contents or abolish the current webtoon promotion, while it is necessary to derive the plans for the efficient implementation of the contest, further to the need to discuss the secondary publicity after the contest rather than halting after it.

The Impact of Service Quality of Franchise Coffee Shop' s on Affective Commitment and Repurchase Intentions (프랜차이즈 커피전문점의 서비스품질이 정서적 몰입과 재구매의도에 미치는 영향 - 수도권 지역 대학생을 중심으로 -)

  • Ju, Yoon-Hwang;Lee, Young-Chul;Yang, Hoe-Chang
    • The Korean Journal of Franchise Management
    • /
    • v.3 no.1
    • /
    • pp.46-72
    • /
    • 2012
  • Currently, the service industry share in domestic industry is increasing. Especially the size and marketability of the food service industry, which satisfies with basic human desire, is growing significantly. In this food industry, the coffee industry is recognized as a different area from the traditional food industry. The age of instant coffee at low price has gone. Today, more and more customers want to drink more delicious coffee and coffee that is good to their bodies. Especially as individualism has been rambling, more and more people enjoy individualism and want their personal space. This is why coffee speciality stores have been universalized. Also, as coffee speciality stores have been generalized, their own service quality is necessary and they should satisfy and affirm their loyalty to the customers in line with the enhancement of service quality. The purpose of this research is understanding of the impact of coffee specialty shop's service quality on affective commitment and repurchase intentions. The results of an empirical study in this research are as follows: First, compassion among the execution factors of coffee specialty shop's quality has a positive effect on both of affective commitment. But typicality and reactivity don't. Second, affective commitment have a positive effect on repurchase intentions. With a base of the above research result, we should comprehend that another service quality factor exists compared to other dining-out industry and establish marketing strategies in order to contribute to enhance repurchase intentions for the customers.

Flow Structure and Turbulence Characteristics in Meandering Channel (사행수로의 흐름구조 및 난류특성)

  • Seo, Il Won;Lee, Kyu Whan;Baek, Kyong Oh
    • KSCE Journal of Civil and Environmental Engineering Research
    • /
    • v.26 no.5B
    • /
    • pp.469-479
    • /
    • 2006
  • In order to investigate characteristics of the primary flow and the secondary currents in meandering channels, the laboratory experiments were conducted in S-curved channels with angle of bend, $150^{\circ}$, and sinuosity of 1.52. The experimental conditions was decided varying average depth and velocity. Under these experimental conditions, spatial variations of the secondary currents in multiple bends were observed. The experimental results revealed that the distribution of primary flow in straight section is symmetric without respect to the experimental condition and the maximum velocity line of the primary flow occurs along the shortest path in experimental channel, supporting the result of previous works. The secondary currents in second bend became more developed than those in first bend. Particularly, the outer bank cell developed distinctively and the secondary current intensity was low at the straight section and high at the bends, periodically. Also, the secondary current intensity at the bends was as twice to three times as that at the straight section, and has its maximum value at the second bend. The turbulent flow characteristics of meandering channel was investigated with turbulent intensity of the primary flow and Reynolds shear stress. It was observed that the turbulent intensity is increasing when the velocity deviation of the primary flow is large whereas Reynolds shear stress increases when both the velocity deviation of the primary flow and the secondary current are large.

Non-Pharmacological Interventions for Behavioral and Psychological Symptoms of Neurocognitive Disorder (신경인지장애의 정신행동증상에 대한 비약물학적 개입)

  • Hyun Kim;Kang Joon Lee
    • Korean Journal of Psychosomatic Medicine
    • /
    • v.31 no.1
    • /
    • pp.1-9
    • /
    • 2023
  • Patients with neurocognitive disorder show behavioral psychological symptoms such as agitation, aggression, depression, and wandering, as well as cognitive decline, which puts a considerable burden on patients and their families. For the treatment of behavioral psychological symptoms, patient-centered, non-pharmacological treatment should be used as a first line approach. This paper describes non-pharmacological interventions to manage and treat behavioral psychological symptoms in patients with neurocognitive disorder. In order to control behavioral psychological symptoms such as agitation, depression, apathy, insomnia, and wandering, it is important to identify and evaluate factors such as environmental changes and drugs, and then solve such problems. Non-pharmacological interventions include reassurance, encourage, distraction, and environmental change. It is necessary to understand behavior from a patient's point of view and to approach the patient's needs and abilities appropriately. Reminiscence therapy, music therapy, aroma therapy, multisensory stimulation therapy, exercise therapy, light therapy, massage therapy, cognitive intervention therapy, and pet therapy are used as non-pharmacological interventions, and these approaches are known to improve symptoms such as depression, apathy, agitation, aggression, anxiety, wandering, and insomnia. However, the quality of the evidence base for non-pharmacological approaches is generally lower than for pharmacological treatments. Therefore, more extensive and accurate effectiveness verification studies are needed in the future.

A New Record of Scopelarchoides danae (Scopelarchidae, Aulopiformes) Collected from the Southern Sea of Korea (한국 남해에서 채집된 홍메치목(Aulopiformes), Scopelarchidae, Scopelarchoides danae의 첫기록)

  • Jin-Koo Kim;Jung-Hwa Ryu;Se-Hyun Song
    • Korean Journal of Ichthyology
    • /
    • v.35 no.4
    • /
    • pp.361-365
    • /
    • 2023
  • On May 12, 2023, a juvenile specimen (37.6 mm in standard length) belonging to the order Aulopiformes was collected from southern Yokjido, Tongyeong, Korea, using a Bongo net. The specimen was identified as the member of the family Scopelarchidae in having a slender body, a large mouth, large tube-like eyes, a long anal fin base, a developed adipose fin and no photophores on body. Finally, we identify the specimen as Scopelarchoides danae Johnson, 1974 in having 8 dorsal fin rays, 20 pectoral fin rays, 9 pelvic fin rays, 26 anal fin rays, dorsal fin located anteriorly than pelvic fin, and two large pigments below the pectoral fin and posterior to the pelvic fin. Scopelarchoides danae is distinguished from Scopelarchoides signifer in having less dorsal fin rays (8 vs. 9~10) and pectoral fin rays (20 vs. 22~25). The species differs from Scopelarchus guentheri and Scopelarchus analis in that it has no stripes along the both upper and lower of lateral line, and from Scopelarchus michaelsarsi in that it has more anal fin rays (26 vs. 18~21). Because this is the first occurrence among Korean fish fauna, we present its detailed morphological traits, and its new Korean name as "Nun-bang-ul-mae-tung-i".

Scientifically Gifted Students' Perception of the Learning Support System based on Korea Science Academy Survey (과학영재학교의 학습 지원 체제 유용성에 대한 학생들의 인식 : 한국과학영재학교를 중심으로)

  • Bae, Sae-Byok;Kim, Kyoung-Dae;Kang, Soon-Min;Yune, So-Jung
    • Journal of The Korean Association For Science Education
    • /
    • v.29 no.5
    • /
    • pp.552-563
    • /
    • 2009
  • The purpose of this study is to investigate the students' perception of the learning support system of Korea Science Academy and to propose improvements to it. The impact of the science learning support system on 129 gifted students in Korea Science Academy (KSA) was estimated by using Likert-type items and the multiple-choice method approach for more comprehensive evaluation. The results of our investigation are as follows: First, the learning support system of KSA appears globally useful to the students. The list of educational usefulness to the students comprises, in the decreasing order of utility, classroom work, Internet, lab activities, reading rooms, library, research meetings and clubs, academic advisors (AA), SAF (Science Academy Fair), e-learning system, and finally colloquia by invited lecturers. Second, what the gifted students hope for in the realm of learning support from KSA are learning guides by subject teachers, presentation skill program, the constructions of on/off-line learning communities, etc. It seems that the results of this study would be helpful in improving the learning support system, and will provide useful information for planning the direction of future science-gifted education programs at the high-school level.